glottal stop

noun Phonetics.

1. a plosive consonant whose occlusion and release are accomplished chiefly at the glottis, as in the Scottish articulation of the t-sound of little, bottle, etc.
2. a stop consonant, without release, having glottal occlusion as a secondary articulation, as in yep for yes, nope for no.

noun

1. a plosive speech sound produced as the sudden onset of a vowel in several languages, such as German, by first tightly closing the glottis and then allowing the air pressure to build up in the trachea before opening the glottis, causing the air to escape with force